Exchange the values of the specified a and b objects.
This function provides the no-throw exception-safety guarantee if the two objects were created with the same allocator and the basic guarantee otherwise. Note that in case the allocators are different this function places a clone of a into b, and vice versa. See {Value Semantics} on details of the cloning that may happen.
| Name | Description |
|---|---|
| a | first object to exchange |
| b | second object to exchange |